Amp gauge showing around 20 amps whole time I was driving.

Allright! Damn! If I'd have known what to put I'd have put it in the question. I was hoping that someone would just say ask me more so I could figure this out. It's a 72 Dart with a repro wiring harness with dual ballast. showing 20 amps charge anything over idle. It's an old alternator and was an old module and regulator. Like over 25 years old but not many miles really. Maybe 12k. Having it melt out the sealer or whatever that crap is, out of both of these is pretty crazy. I don't have anything wired up aftermarket not even a stereo. I'll have to check off idle voltage after I install the module and regulator. I had to jump it this spring but the carb was dry and it didn't get fuel for a while so I charged it and haven't had an issue with that since. Haven't driven it much this year.